2003—2013年中国县域单元粮食增产格局及贡献因素研究

发布时间：2018-01-17 17:37

本文关键词：2003—2013年中国县域单元粮食增产格局及贡献因素研究　出处：《自然资源学报》2017年02期 　论文类型：期刊论文

【摘要】：2003—2013年,中国粮食产量逐年增加,实现了前所未有的"十连增",2015年更是达到了"十二连增"。文章采用2003—2013年粮食播种面积、产量等为基础数据,以分县为研究单元,定量分析了2003—2013年间中国分县粮食增产的特征、格局与贡献因素,结果表明:1)2003—2013年间我国超过75%的县域单元粮食均出现增产,但主要增产仍集中在东北和黄淮海平原地区的产粮大县;2)粮食增产增幅的两极分化较为明显,处于"滞后增产"和"超速增产"的县域单元占比均较高,其中"超速增产"的县域单元主要分布在松嫩平原、三江平原、黄淮海平原、江汉平原、鄱阳湖平原、黄土高原以及新疆等地;3)对于大部分县域单元而言,播种面积和单产水平对其粮食增产均有正向贡献作用,其中东北平原、内蒙古高原西部、河西走廊、新疆、江汉平原、洞庭湖平原等地播种面积贡献较大,而单产水平贡献较大的地区为黄淮海平原、黄土高原、青藏高原东南部等地。
[Abstract]:From 2003 to 2013, China's grain production increased year by year, achieving an unprecedented "ten consecutive increase". In 2015, "12 consecutive increase" was achieved. The paper uses the grain planting area and yield as the basic data from 2003 to 2013, taking the county as the research unit. The characteristics, pattern and contributing factors of grain increase in different counties in China from 2003 to 2013 were analyzed quantitatively. The results showed that more than 75% grain units in China had increased grain yield from 2003 to 2013, but the main increase was still concentrated in the big grain producing counties in Northeast China and Huang-Huai-Hai Plain. 2) the polarization of grain yield increase is obvious, and the proportion of county units in "lag production increase" and "excessive yield increase" is higher, in which the "super increase" county unit is mainly distributed in Songnen Plain. Sanjiang Plain, Huang-Huai-Hai Plain, Jianghan Plain, Poyang Lake Plain, Loess Plateau and Xinjiang; 3) for most county units, planting area and yield level have positive contribution to grain increase, including Northeast Plain, Western Inner Mongolia Plateau, Hexi Corridor, Xinjiang, Jianghan Plain. The planting area of Dongting Lake Plain and other places contribute greatly, while the areas with greater contribution to yield level are Huang-Huai-Hai Plain, Loess Plateau and Southeast Qinghai-Xizang Plateau.
【作者单位】：中国科学院地理科学与资源研究所;中国科学院大学资源与环境学院;
【基金】：国家自然科学基金项目(41430861,41471453)~~
【分类号】：F326.11
【正文快照】： 自20世纪70年代初一场席卷全球的粮食危机以来,粮食安全问题逐渐得到世界各国的高度重视,作为世界人口最多的国家,粮食安全对于中国无疑有更为特殊的意义[1]。近年来,伴随我国经济高速发展以及工业化、城镇化的逐步推进,耕地“非农化”以及农业生产“非粮化”现象愈加显著,其

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